ovsdb: deactivate removed device if does not have a master
When using OVS link aggregation ports, NetworkManager ovsdb is removing the ports when cleaning it up. If that happens, it should deactivate the device even if it does not have controller or the state is not assume/external.
An interface that is port of the OVS bonding can be activated before the ovsdb clean up, if it is not deactivated then NetworkManager will finish with a wrong configuration. The 'ovsdb_device_removed()' is already checking that the device is "ovs-interface" with subtype "system".